Comparative study of Vetiveria zizanioides, Vetiveria nigritana and Andropogon gayanus in a trial of soil and water conservation
1996
Kambou, F. | Zougmore, R. | Thiombiano, L.(Agricultural Inst., Ouagadougou (Burkina Faso))
Using vegetation in a trial of soil and water conservation is an important challenge in arid and semi-arid zones. The objective of the study is to obtain data on the comportment of three grass species, V. zizanioides (unknown in the country), the local Vetiver (V. nigritana) and A. gayanus. On a bare ferrugineous soil (Lixisol), three stone lines were used for vegetalization of the stone lines. The results obtained show a few mortality of V. zizanioides (3 percent) compared to the local grass (18 percent for V. nigritana and 34 percent for A. gayanus) in terms of growing after plantation. Concerning plant height, local grass (A. gayanus) have a total longer of 203 cm when Vetiver grass (local and exotic) have just 103, 5 cm after 103 days. The weight of dried material is respectively 7570 g for Andropogon, 3548 g for V. zizanioides and 866 g for V. nigritana. The coverage of the soil in amount of the stone line is about 80-90 percent for Andropogon and 50 to 60 percent for Vetiver grass. The soil moisture evaluate ponderal method is twice more under A. gayanus comparatively to V. nigritana. V. zizanioides maintained more moisture in the soil than the local Vetiver. These data revealed the potential of Vetiveria zizanioides growing in soudano-sahelian zone and the possibility to use it for stone line vegetalization to combat erosion.
Afficher plus [+] Moins [-]Mots clés AGROVOC
Informations bibliographiques
Cette notice bibliographique a été fournie par Kasetsart University
Découvrez la collection de ce fournisseur de données dans AGRIS